Oil filters that fit - Page 16 - Triumph Forum: Triumph Rat Motorcycle Forums

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post #151 of 268 (permalink) Old 12-11-2012, 02:05 PM
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Pressure

OK, looking for more info, maybe Forchetto can chime in?

How much pressure should be in the oil filter? I don't know, but I think the oil filter is right after the oil pump. Presumably, the oil will spend a good chunk of time over ~15 psi. That is the level that most of the car filters listed as by-pass pressure. So, in our bikes, wouldn't the oil spend most of its time not getting filtered?

Scary would be, if I am correct, when the bike is turning 4K RPM, it will present at least 40 PSI (thanks already Forchetto) and so even the bike filters will not be filtering during most of our cruising.

So, uh, where am I wrong? (For once, I don't want to be right)
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post #152 of 268 (permalink) Old 12-11-2012, 07:51 PM
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Originally Posted by midengineracer View Post
...How much pressure should be in the oil filter?...Scary would be, if I am correct, when the bike is turning 4K RPM, it will present at least 40 PSI (thanks already Forchetto) and so even the bike filters will not be filtering during most of our cruising....am I wrong? ...

Fortunately, you are wrong. The bypass valve is reacting to pressure differential on either side of the oil filter media, NOT to total oil system pressure at the oil pump.

The pressure relief valve works to keep the filter media from blowing out, such as if the media is clogged, or other valid reason, perhaps from a cold motor.

If your bike is warmed up and you are cruising down the highway and system pressure is at say 40 - 80 PSI, presuming that the filter media isn't clogged and there are no other oil-related malfunctions, then the oil should be flowing through the filter media just fine.

IMO, the higher the bypass rating, the better, within limits.

Last edited by B02S4; 12-11-2012 at 08:12 PM.
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post #153 of 268 (permalink) Old 12-12-2012, 12:52 PM
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Smile Excellent

Thanks a ton, I feel better.
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post #154 of 268 (permalink) Old 12-12-2012, 06:07 PM
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Just to give a little experience with a Pureone purolator filter. My wife's Dodge Stratus had an oil weeping problem when new. The dealer put a diagnostic dye in the oil to find the leak with a blacklight. They couldn't find the leak because the filter removed all the dye. When I changed oil the dye all ran out of the filter.

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post #155 of 268 (permalink) Old 12-13-2012, 10:12 AM
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Yup...ended up doing just that. $13.95 @ filter. I picked up a couple. It's funny how on the Triumph Filter box it clearly says... " To be installed by a trained mechanic". I thought all Triumph owners are by very definition, mechanics.
Back in the 60's the saying was... Triumph, turns an ordinary man into a mechanic.

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post #156 of 268 (permalink) Old 01-07-2013, 08:22 PM
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I have NEVER used any kind of wrench to tighten an oil filter - just spread a light film of oil on the new filter's rubber gasket, then hand tighten. To remove, get yourself a simple chain/strap wrench.
Exactly. Never had a problem on cars, bikes, boat motors, tractors.

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post #157 of 268 (permalink) Old 01-08-2013, 09:26 AM
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Exactly. Never had a problem on cars, bikes, boat motors, tractors.
Me neither.
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post #158 of 268 (permalink) Old 01-15-2013, 10:14 AM
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This is great info as some dealers are disappearing and shipping cost keep rising. Almost everyone has one or more of these alternatives close by.

Thanks everyone for the input!
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post #159 of 268 (permalink) Old 01-29-2013, 05:00 PM
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Ryco Australian Filters

for the Aussies, Ryco oil filters

I once posted that a Ryco Z436 is suitable, having the exact same dimensions and specifications as the original Triumph filter.

a Z411 is also suitable as all specifications are identical as the former except 20mm longer. being longer it therefore has more filter media and therefore more affective for a longer period, plus it is easier to get a tool on it to remove.

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post #160 of 268 (permalink) Old 01-29-2013, 05:17 PM
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Changed the oil and used a Fram (I know, I know). pre-oiled the filter (always). Filled it, ran it and it dribbled oil. Took a strap wrench and nudged it a little more. Viola! No more leak. I'll try a Pure One next time if the locals have one. By the way, for those guys asking how much oil to put in at a time, dump the first 3 bottles in. Take the 4th quart and pour enough oil into an empty bottle to get it below the 800ml mark on the bottle. Then dump in the rest. 3 liters + 800 ml = 3.8 liters.

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